Yamaha F400A 2022 - Disassembling the Upper Case; Checking the Upper Case; Checking the Muffler; Checking the PCV

Upper case, muffler, and oil pan
9-29
Disassembling the upper case
1. Remove:
• Drive shaft bushing “1”
A
B
Checking the upper case
1. Clean:
• Removed parts
2. Check:
• Drive shaft bushing
Cracked/worn → Replace.
3. Check:
• Upper case
Corroded/cracked → Replace.
Checking the muffler
1. Clean:
• Removed parts
2. Check:
• Muffler
Corroded/cracked → Replace.
Checking the PCV
1. Check:
•PCV
Damaged → Replace.
•Grommet
Deformed → Replace.
• Spring
Corroded/deformed/fatigued → Replace.
Checking the oil pan and oil strainer
1. Clean:
• Removed parts
2. Check:
• Oil strainer
Dirt/residue → Clean.
Cracked/damaged → Replace.
3. Check:
• Oil pan (upper and lower)
Corroded/cracked → Replace.
Assembling the oil pan
1. Install:
•Damper
•Strainer
• Circlip
•O-ring
• Drain bolt
•Dowels
•Gaskets
• Oil pan (upper and lower)
•Grommet
•PCV
• Spring
•Cover
a. Install the bolt (M10 × 35 mm) “1” and
bolts (M10 × 70 mm) “2”, and then
tighten the bolts “1” and “2” to the
specified torques in 2 stages and in the
order [1], [2], and so on.
A. Worldwide
B. USA and Canada
Bearing puller assembly “2”
90890-06535
Stopper guide plate “3”
90890-06501
Stopper guide stand “4”
90890-06538
Slide hammer “5”
YB-06096
3
4
2
1
5
1
New
New