Checking The Valve Lifters; Installing The Valves - Yamaha 2012 TMAX XP500A Service Manual

EAS24320

CHECKING THE VALVE LIFTERS

The following procedure applies to all of the
valve lifters.
1. Check:
• Valve lifter
Damage/scratches → Replace the valve
lifters and cylinder head.
EAS24340

INSTALLING THE VALVES

The following procedure applies to all of the
valves and related components.
1. Deburr:
• Valve stem end
(with an oil stone)
2. Lubricate:
• Valve stem "1"
• Valve stem seal "2"
(with the recommended lubricant)
Recommended lubricant
Molybdenum disulfide oil
VALVES AND VALVE SPRINGS
3. Install:
• Valve spring seat "1"
• Valve stem seal "2"
• Valve "3"
• Valve spring "4"
• Valve spring retainer "5"
(into the cylinder head)
TIP
• Make sure each valve is installed in its origi-
nal place.
• Install the valve springs with the larger pitch
"a" facing up.
b. Smaller pitch
4. Install:
• Valve cotters "1"
TIP
Install the valve cotters by compressing the
valve spring with the valve spring compressor
5-27
New