GAS GAS SM 2008, User Manual

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Drive Chain Lubrication
Lubricate the drive chain after driving on wet terrein or when the
chain looks dry. A high viscosity oil is preferred rather than a lower
viscosity because it will stick to the chain longer and lubricate the
chain better.
Apply oil to the sides of the chain rollers
(A) for better oil penetration.
Wipe off any excess oil.
(A). Apply grease.
TUNE-UP
1. CARBURETOR TUNE-UP
Mixture
First step is to establish a basic knowledge on the identification and
operation of carburetor components. Change settings in accordance
with the temperature:
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43
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NOTE
The main jet should be increased or decreased 1 to 5 sizes and
tested until the engine gives maximum power.
Main jet
It has a great overall effect. The number stamped on lower part of
the main jet indicates the size of the hole metering fuel. A greater
number corresponds to a bigger hole which supplies more fuel.
WARNING
Gasoline is extremely flammable and can be explosive under certain
conditions. Always stop the engine and do not smoke. Make sure
the area is well ventilated and free from any source of flame or
sparks (this includes any appliance with a pilot light).
(A)
Condition Mixture Change setting
Cold air Lean Rich
Warm air Rich Lean
Dry air Lean Rich
Low altitude Standard Standard
High altitude Rich Lean
(A). Main jet.
(A)