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V4.0
1.
Do not remove or alter any part of the intake, fuel, or exhaust systems.
2.
Do not alter or defeat the governor linkage or speed-adjusting mechanism to cause the engine to operate
outside its design specifications.
PROBLEMS THAT MAY AFFECT EMISSIONS
If you are aware of any of the following symptoms, have your engine inspected and repaired by a qualified technician.
1.
Hard starting after stalling.
2.
Rough idle.
3.
Misfiring or backfiring under load.
4.
Afterburning (backfiring).
5.
Black exhaust smoke or high fuel consumption.
REPLACEMENT PARTS
The emission control systems on your engine were designed, built and certified to conform to Canadian emission
regulations. The use of genuine parts is recommended whenever maintenance is done to the engine. Genuine
replacement parts are manufactured to the same standards as the original parts. Using replacement parts that are
not of the original design and quality may impair the effectiveness of your emission control system.
It is the responsibility of the manufacturer of an aftermarket part to certify that use of the part will not result in a
failure of the engine to comply with emission regulations.
MODIFYING CARBURETOR FOR HIGH ALTITUDES
At high altitude, the standard air-fuel mixture will be too rich, causing increased fuel consumption and decreased
performance. A rich mixture will also foul the spark plug and cause hard starting.
A qualified technician can improve high altitude performance with certain modifications. Have your carburetor
modified if the engine will routinely be operated at altitudes above 5,000 ft (1,500 m). Even with carburetor
modification, engine power will decrease about 3.5% for each 1,000 ft (300 m) increase in altitude. The effect of
altitude on power will be greater than this is if no modification is made.
CAUTION! When the carburetor has been modified for high altitude operation, the air fuel mixture will be too lean
for low altitude use. Operation at altitudes below 5,000 ft (1,500 m) may cause the engine to overheat and result in
serious engine damage. When using this engine at low altitudes, have a qualified technician return the carburetor
to original factory specifications.
ADJUSTING THE ENGINE IDLE SETTING
NOTICE! The engine speed is set by the factory. Increasing the speed too much can damage the engine. Too low a
speed will reduce the engine's efficiency. Have a qualified technician adjust the engine speed if necessary.
The engine does not have a variable speed option. The engine's idling speed is adjustable by turning the governor
arm screw (#38) to lower or increase the engine output (RPMs).
1.
Remove the shroud and locate the governor arm screw.
2.
Start the engine and wait for it to idle.
3.
Tighten the screw to increase the engine speed. Loosen to
reduce speed.
4.
Shut the engine off and allow to cool
5.
Reattach the shroud.
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208cc OHV Winter Gas Engine
8291098
fig. 12
11
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