Kubota WSM F3680 User Manual

1-S36
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM
ENGINE
Crankshaft Assembly
1. Remove the main bearing case screw 2 (1).
2. Pull out the crankshaft assembly.
IMPORTANT
■
• Take care to protect crankshaft bearing 1 from scratches,
caused by the crank gear, etc.. (Wrap the gear in vinyl tape,
etc.)
(When reassembling)
• Clean the oil passage of the crankshaft with compressed air.
• Apply oil to the main bearing case screw 2 (1).
• Install the crankshaft assembly, aligning the screw hole of main
bearing case with the screw hole of crankcase.
• Clean the oil passage of the crankshaft with compressed air.
W10295750
Main Bearing Case Assembly
1. Remove the two main bearing case screws 1 (2) of each main
bearing cases.
2. Remove the main bearing case from crankshaft.
(When reassembling)
• Clean the oil passage in the main bearing cases.
• Apply clean engine oil on the bearings.
• Install the main bearing case assemblies in the original positions.
Since diameters of main bearing cases vary, install them in order
of makings (b) from the gear case side.
• Match the alignment numbers (a) on the main bearing case
assembly 1.
• When installing the main bearing case 1 and 2, face the mark
“FLYWHEEL” to the flywheel.
• Install the thrust bearing (3) with its oil groove facing outward.
• Confirm that the main bearing case moves smoothly after
tightening the main bearing case screw 1 to the specified torque.
W1037295
Tightening torque Main bearing case screw 2
49.0 to 53.9 N·m
5.0 to 5.5 kgf·m
36.2 to 39.8 ft-lbs
(1) Main Bearing Case Screw 2
Tightening torque Main bearing case screw 1
29.4 to 34.3 N·m
3.0 to 3.5 kgf·m
21.7 to 25.3 ft-lbs
(1) Main Bearing Case Assembly 1
(2) Main Bearing Case Screw 1
(3) Thrust Bearing
(a) Alignment Number
(b) Marking (A, B, C) (D1105)
(b) Marking (A, B, C, D) (V1505)
KiSC issued 04, 2006 A

Kubota WSM F3680 Specifications

General

Brand	Kubota
Model	WSM F3680
Category	Lawn Mower
Language	English