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Basic Maintenance Procedures
A dirty, clogged air filter will inhibit the performance of your TT40 minibike, so it is important
and quite easy to check and clean it periodically. Burromax recommends that the air filter
gets checked every month and cleaned at least every three months. More frequent cleaning
may be required if you tend to ride in extremely dusty or dirty conditions.
To check and clean the filter it must be removed from the engine. To do so, locate the air
filter housing which is the square black plastic unit on the back of the engine, just above the
pulls starter unit and behind the choke lever.
Remove the center screw that holds the air filter cover in place and pull the cover from the
engine. Pull out the foam filter element with your fingers and inspect for dirt and debris. You
can clean the foam element with forced air, being careful not to tear it. Or you can wash it
with soap and water. Be sure to dry it thoroughly before replacing it by squeezing all the
water out and letting it air dry completely.
Note: Do not use gasoline to clean the air filter.
Once the air filter is completely dry, you can reinstall it into the housing and tighten the
center screw that holds the housing in place.
Throttle Free play - 1/16 - 1/8 inch (2 - 3mm)
1. Find throttle cable lock nut and adjusting sleeve,
located on the throttle twist grip
2. Loosen the lock nut so sleeve can freely turn.
3. By hand, turn the adjusting collar to obtain the
proper throttle free play.
4. Tighten lock nut.
5. Check the throttle for smooth rotation from fully
open to fully closed in all steering directions.
Note: The throttle should turn freely and return
to idle position on it own when released.
Air Filter
Throttle Free play