Engine for Bicycle

Engine for Bicycle

CZPT Information: 
You should, obey all traffic rules. 
Usually use a helmet while riding. 
Don’t forget that you are riding a motorized bicycle and other traffic may not be ready to see you. 
Even if they do see you, they will not count on that you will be touring as swiftly as you are, and 
the other traffic will reduce out in front of you…guaranteed! 
Never operate your motorized bicycle on a pedestrian by way of way, sidewalk, or bicycle route while 
the engine is running. 
In no way work your motorized bicycle in an unsafe or disrespectful way. 

Engine Package Installation Instructions 
Mechanical aptitude is essential for effective set up. 
Most 24″ or 26″ bicycle with diamond frame and a horizontal top tube should have sufficient rate to 
mount the engine 
Step 1: The rear wheel sprocket shall be mounted very first! 
Remove the rear wheel from the bicycle. 
Take away the rear wheel sprocket and associated 
mounting add-ons from the bag 
Slit 1 of the rubber washer as demonstrated. This is to 
allow the rubber washer to go close to the rear wheel 

Insert the rubber washers as shown 
Δ Mount the sprocket to the rear wheel as shown. 
Δ Do not over-tighten and make sure that the 
sprocket is just perpendicular to the axis of 
the wheel. 
Δ Reinstall the rear wheel to bicycle. 
Subsequent: The Carburetor 
Get rid of valve system from the carburetor. 
Insert throttle cable by means of screw cap. Insert spring return and hooked up finish of cable to valve plunger. 
Line up the cable and spring. 
Run cable down to engine Replace over mechanism into the carburetor.

Following: The Engine: 
The engine is designed to fit among the down tube and the seat tube of a normal diamond frame 
bicycle. Other kinds of bicycle may possibly call for slight modifications. 
Placement the motor so that when the exhaust silencer is put in, it details in direction of the floor nearly 
parallel to the down tube. 
The exhaust silencer wants to be taken off to tighten the mounting nuts. 
So when positioning the motor, there is no want to tighten the exhaust silencer to the motor. 
Be aware: If the bicycle frame tubing is as well large then you will have to use the bicycle frame adapter. 
(steel plate with 3 holes in the very same plastic bag there are 3 bolts two that go into the motor and one 
longer one particular that goes through the bike frame then by means of the motor mount)

As shown on images below 
Bicycle body adapter Insert the two shortst bolts in to the motor 
Bicycle body adapter mounted to the engine 
Location the motor on the bicycle body as shown 
on photo 
Mark the spot of the center hole of the bicycle 
frame adapter, you will want to drill a gap through 
the bicycle body on that spot.

The more time bolt goes through the bike body then by way of the motor mount) As demonstrated on photographs beneath: 
Subsequent: Chain push: 
Get rid of chain cover and spark plug. 
Break chain and feed into drive sprocket on engine. 
Use box spanner supplied to crank chain around 
drive sprocket. 
Get rid of extra chain and reconnect. 

Install chain information pulley. 
Do not above-tension the chain. 
Install chain guard and change spark plug 
Up coming: CDI CZPTal Wiring Connections 

There have been numerous queries and confusion about how to established-up the wiring on a bicycle engine. 
The photo beneath was sent to me by a buyer of mine (thank you Dan) following I experienced explained to him 
how it must be completed. I considering that questioned him if it would be alright to post it up listed here for every person to see 
because he did this kind of a fantastic occupation at drawing what I usually spend time creating. 
I would create it out, but the picture is fairly significantly self-explanatory…if you even now have questions, please let 
me know. 
As they say…”a image is value a thousand words” and in this circumstance it is. 
Upon seeing this picture, yet another person sent me the photo underneath. Lyle hadn’t even put an order 
however when he sent the picture that he made, but he did get his CH80 a few times later on. It turned out very 
great and between these two images I never consider it would be feasible for anyone to have concerns still 
…thanks for the image Lyle.

There have also been a couple of men and women out there that have dropped their spark. This is usually because of to excess 
dampness receiving into the location of the coil…drinking water and electric power never combine nicely, lol. 
Considering that a lot of of us just take time and satisfaction in having our wiring all wrapped up wonderful and pretty I have posted 
the below pictures to display how the wiring connects on to the coil itself. 
It is a lot easier to strike the connections with a soldering iron to take away the wires from the coil, then 
eliminate the coil and re-connect the wires. Someone has just lately accomplished this but couldn’t remember which 
wire went in which so now I have place pictures up to show so any person ought to be ready to do this. When you 
are putting the new coil in spot, it assists to use a piece of a organization card in between the magnet and 
the coil to keep some slight spacing in there…don’t fail to remember to get rid of it right after you have tightened down 
the coil although.

Up coming: Clutch 
Install clutch lever below left deal with brake lever. 
Run cable down to motor. 
Insert heat protecting spring (larger spring wire) over cable. 
Insert cable via anchor pivot. 
Insert spring return above clutch cable. Tighten cable to clutch lever on motor, guaranteeing that slack just . 
taken out 
The carburetor in the picture bellow was taken out for clarity.

The completed installation should appear like this. 
Up coming: Throttle 
Get rid of existing correct handle grip and change with twist throttle. 
Existing brake lever loosen and shifted to aid installation of twist throttle 
Change brake lever in its unique situation following set up of the twist throttle 
Following: Gas tank 
Lastly, mount the gasoline tank more than the leading tube. 
Tighten the fuel valve to the tank. 
Lower supply gasoline line to size and link fuel valve to carburetor.

Completely ready to go 
Secure unfastened cables to body of bicycle with cable tie (not completed in images). 
Fill gasoline and lubricant mixture in accordance with recommendation on the handbook. 
Compress the clutch and start biking bicycle as typical. When enough velocity is achieved, launch the 
clutch. This will commence the engine. 
To stop, compress and have interaction the clutch lever. Brake as normal. 
To end the motor, choke the carburetor totally with the lever on the carburetor. 
Alternatively, push the get rid of change which is presented. When engine is not managing shut of gas valve 
1.Essential: You should Read through THIS: Fuel and Oil Mixture for Fuel ratio 
The engine is a two cycle style, for that reason, a gasoline/oil combination is essential. For the duration of the break-in 
period (1st gallon of gas), the ratio for 48cc is 25 parts gasoline to one component oil. Crack in ratio for 80cc is 
20 to 1. Right after the crack-in time period, the ratio is elevated to thirty to 35 areas gasoline to 1 part oil. 
*Note: Use only Artificial two Stroke Oil to insure proper motor lubrication. 
Keep in mind safety 
one. Wipe up any spilled fuel. By no means gasoline a very hot motor or smoke while fueling. This could result in 
sudden fire, personalized damage. Always move your motorized bicycle at the very least ten ft from any fueling area 
ahead of making an attempt to begin it. Never go away the tank fuel cap off right after fueling as rain h2o will 
contaminate the gasoline and trigger motor failure. 
two. Open up the gasoline valve. Tiny lever pointed down with gas line is in the open up placement. 
three. Depress the small spherical cap plunger, ( Tickle button ), to primary carburetor. Located on remaining side of 
the carburetor up coming to the idle alter screw. One or two occasions is enough. 
four. Elevate choke lever to the upward situation. This is the modest lever on the right aspect of the carburetor. 
All the way Up the choke is on. All the way Down the choke is off. Moveprogressively downward to 
off placement during engine warm up interval. 
5. Pull the handlebar clutch lever inward, to disengage the engine from the rear wheel. 
6. Pedal (down hill if attainable for first begin) 
seven. Enable out the clutch lever all the way out and continuing to pedal. The end result is a immediate motor hook up 
with the rear wheel via chain and sprocket and the motor will now start off spinning, Pedal until motor 

commences. Speed up slowly at very first. 
8. Twist throttle to enhance pace, reverse twist throttle to reduce velocity. To end, disengage clutch 
and use brakes. To accelerate, pedal and release clutch although opening throttle. 
nine. Change choke to the smoothest engine running place. 
ten. Soon after warm up press choke lever all the way down. If engine races way too quick, or also gradual, pull clutch 
lever and lock in the notched catch, cease and modify engine rpm. 
eleven. If the rpm wants modifying, flip the idle modify screw (left facet of carburetor) in or out slowly and gradually to 
receive the suitable idle speed of about 1400 rpm +/- a hundred rpmTo accurately crack the engine in, Do 
not exceed fifteen mph or 30 min. continuous operating for the 1st fifty HangCZPTs during motor brake in. Engine 
will develop more electrical power right after crack in. 
12. To cease the engine, thrust Eliminate switch and switch off gasoline valve at tank. Turning off the gasoline will prevent 
gasoline from currently being siphoned from tank. Warning Note: Never go away the tank gas valve in “open up” place” 
when engine is not running or the bicycle is in storage. 
13. Following or just before every journey check out all mounting fasteners, like hd. bolts, axle and brakes. 
fourteen. Warning Note: Engine lock up or piston seizure due to poor gasoline / oil mixture will not be 
coated by manufacturing facility warranty. This the obligation of the proprietor / operator to make certain the gasoline and 
oil is combined accurately. 
often Requested Questions 
Can I set up the bicycle engine kit on a mountain bicycle? 
Sure, you can transform your standard mountain bicycle into a motorized bicycle. 
Are parts CZPT for the bicycle motor package? 
Yes, parts are CZPT as well as improve components! 
Does the bicycle motor package comes with almost everything I require to set on my bike? 
Sure, this bicycle motor kit arrives with absolutely every little thing you need 
Do I need a driver license to journey a motorize bicycle? 
In most states you will not require a driver license to ride the motorized bicycle, but the regulation are different in 
some states. We recommend that you check out in you point out. 
Does this bicycle engine package suit all measurement bikes? 
No, this sort of bicycle motors package was layout for 26’inches bikes and some24 inch frame size bikes

Upkeep Routine 
a) Eliminate appropriate side cover from engine. 
b) Area a small dab of grease at ear mesh area. 
c) Substitute go over. 
Based on dusty driving situations, clear air filter each and every 5 to 20 several hours of procedure by 
eliminating the filter go over to access the display and aspect. Clean factor with a 
degreasing agent. Be positive factor is completely dry prior to re-assembly. 
Spark Plug 
Take away spark plug and examine for surplus carbon construct up. Clear, re-gap to .6mm – .7mm 
if necessary. Verify plug soon after every 20 hrs of operation. A appropriate substitution plug is 
NGK BP-6L if you can find it. Otherwise, go for the NGK B-6L. The NGK R7-HS is 
also suggested for much better functionality and smoother idling. 
Exhaust system 
After 20 several hours of operation examine exhaust pipe for extreme oil and carbon develop-up. Be 
confident to use equipped assist strap to secure exhaust muffler to solid anchor stage on bike 
frame or engine. 
a) Eliminate exhaust pipe cap by loosening the retaining screw. 
b) Pull cap and baffle out of pipe. 
c) Clean with degreaser, rinse and dry. 
d) Re-assemble 
Extreme periods of reduced pace operation, idling or leaving fuel petcock in the “on” 
placement in the course of shut down durations might cause the pipe to turn out to be clogged with unburned 
CZPTy time bike is ridden check the pressure of the generate chain by: 
a) Rolling to bicycle CZPT to remove slack from the base of the chain. 
b) Locate middle & thrust downward on the leading of chain although measuring the deflection. 
c) Tighten chain if deflection is a lot more than 15mm. 
d) Minimal speed “chain rattle” can be eliminated with the software of graphite grease to chain.

CZPT Bolts 
Tighten all fasteners following each and every 5 hours of procedure. It’s most critical to check 
cylinder head bolts: tighten in an X sample to twelve ft/lb. using a torque wrench. A twopiece 
cylinder and head layout motor requires head bolts be stored limited. 
Check out head bolts just before every single and each ride, vibration can cause them to loosen and 
blow a head gasket. Caution: Do not in excess of torque or head bolts may break off. 
Right side gears 
Eliminate cover plate and hold small volume of hefty grease on equipment train. 
Do not above grease as leaks will arise and also may possibly adversely affect clutch procedure. 
Regular greasing if needed will help minimize equipment wear and preserve gear practice peaceful. 
CZPT Information 
Obey all traffic restrictions. Often put on an accepted helmet even though driving. Remember 
that you are driving a motorized bicycle and other targeted traffic may not be capable to see you. 
By no means work your motorized bicycle on a pedestrian thoroughfare or pathway whilst the 
motor is procedure. In no way work you motorized bicycle in an unsafe fashion. 
Examine YOUR Neighborhood AND Condition Legal guidelines Ahead of Riding ON STREETS. 
You should go through this petrol and oil combination ratio. 
The motor is a 2-stroke design consequently a petrol/oil mixture is required. 1st three tanks 
of gasoline use 6 ounces of 2-stroke oil to one gallon of gas. Soon after the initial 3 tanks, use 4 ounces 
of oil to one gallon of gasoline. 
USE 93 Quality (Quality) GASOLINE. Be sure to mix gasoline and oil before 
including to tank. Do not incorporate independently. 
Do not exceed 20km/h throughout split in period. Pace may possibly be improved to 35km/h after 
the 1st 500km. 
Use only high-quality two-stroke bike oil to make certain correct motor lubrication. 
Don’t forget safety very first. Wipe up any spilt gas. In no way refuel a sizzling motor or smoke whilst 
refueling. This could end result in fire and private injury. Always go your motorized bike 
at the very least 3 meters from any refueling region just before attempting to begin it. Never ever leave the 
tank gasoline cap off right after refueling as rainwater could contaminate the gas and trigger engine 
one) Open the fuel valve. Little lever pointed down with fuel line is in the open up placement. 
2) Depress the small round cap plunger (tickle button), to primary carburetor.1 or two moments are 
3) Lift choke lever to the upward place. This is the little lever on the appropriate side of the carburetor. 
All the way up the choke is on. All the way down the choke is off. Transfer progressively downward to off 
placement during engine heat up period of time. 
four) Pull the handlebar clutch lever inward, to disengage the motor from the rear wheel. 
5) Pedal (down hill if possible for initial start off). 
6) Let out the clutch lever all the way out and continuing to pedal. The result is a direct motor hooks up

with the rear wheel by way of chain and sprocket and the engine will now commence spinning, pedal till motor 
commences . Accelerate slowly at initial. 
seven) Twist throttle to improve pace, reverse twist throttle to lessen velocity.To cease, disengage clutch 
and implement breaks. To speed up, pedal and launch clutch even though opening throttle. 
eight) Adjust choke to the smoothest engine running placement. 
nine) Right after warm up drive choke lever all the way down. If engine races too fast,or way too sluggish, pull clutch lever 
and lock in the notched capture, end and modify engine rpm. 
10) If the rpm wants changing, change the idle change screw (prime of carburetor) in or out slowly and gradually to obtain the 
proper idle speed of about 1400 rpm +/- a hundred rpm. To accurately split the motor in, do not exceed 25 
kph or 30 min. continual operating for the initial 80 klms in the course of motor crack in. Engine will create more 
electricity following break in. 
11) To stop the motor, drive kill swap and flip off fuel valve at tank. Turning off the gasoline will prevent 
gas from being siphoned from tank. In no way depart the tank gas valve in “open up” situation when engine is 
not running or the bicycle is in storage. 
twelve) Af ter or just before each and every trip check out all mounting fasteners, like head bolts, axle and brakes. 
13) Warning: Motor lock up or piston seizure because of to improper petrol/oil combination will arise. This 
responsibility of the owner/operator to make confident the petrol and oil is blended accurately.


Engine for Bicycle