CHAPTER 3A ENGINE 260/ 300 / 400 cc ATV SERVICE MANUAL09.0
CHAPTER 3 ENGINE PAGE. 3A- 71
VACUUM CHAMBER
10.Remove:
zCover①
11.Remove:
zDiaphragm spring①
zPiston valve②
12.Inspection:
zJet needle
Wear→Replace.
zPiston valve
Wear→Replace.
Check the jet needle for stepped wear.
Check the vacuum piston for wear or damage.
Check the diaphragm for holes, deterioration or
damage.
Check the vacuum piston for smooth operation
up
and down in the carburetor body.
FLOAT AND JETS
13.Remove:
zFloat chamber①
WARNING
Never drain the float bowl when the engine and
the exhaust system are hot. Severe burns may
result.
zFloat②
zNeedle valve③