Raider Max 175 (single-seat, double-seat): Service Manual EEC Version:2.0 April 2005
17
3.2.2
Trouble Shooting
z
The compression is too low or not stable.
a) Valve
The lifter isn’t adjusted well;
The valve is burnt or deformed;
The valve spring is damaged;
The valve timing is faulty;
The valve seat seal is faulty.
b) Cylinder Head
The cylinder head gasket leaks air;
The cylinder head is deformed or cracked.
c) Cylinder piston is faulty.
z
The compression is too high.
There is carbon accumulation on the piston or in the combustion chamber.
z
Noise
The lifter isn’t adjusted well.
The valve is burnt, or the valve spring is damaged or worn.
The rocker or the rocker shaft is damaged or worn.
3.2.3 Assemble Valve Rocker Arms & Shafts
a)
Check if the seals on the valve rocker arm shafts are in good
condition; if damaged, replace them;
Put some engine oil on the surface of the rocker arm shafts and
the seals.
b)
Assemble the two valve rocker arms (exchangeable) in the
place as shown in the picture;
Valve Rocker
Arm
Seal
