TOHATSU MFS 25D Service Manual page 212

4 stroke
Hide thumbs Also See for MFS 25D:
Table of Contents

Advertisement

Power Unit
Remove the connecting rod cap 6 and measure the
8.
width of the crushed Plastigauge 4 on each crank pin 5.
Replace the connecting rod 2 or crankshaft if greater than
the specified value.
Crank Pin Oil Clearance:
0.015 – 0.041 mm (0.0006 – 0.0016 in)
Functional Limit:
0.060 mm (0.00236 in)
42) Inspection of Crankshaft Main
Journal Oil Clearance
1.
Clean the bearings, crankshaft main journals, and bearing
mounting surfaces of the crankcase and cylinder block.
2.
Place the cylinder block on a workbench with the cylinder
head side facing downward.
Install the bearings 1 and crankshaft 2 in the cylinder
3.
block 3.
• Be sure that each bearing is installed in its
original location.
• Align the protrusion a on the bearings to the
groove b on the cylinder block to install them.
Place a Plastigauge 4 in each crankshaft main journal so
4.
that it is parallel with the crankshaft.
Do not place the Plastigauge on the oil hole of the
crankshaft main journal.
5.
Install the bearings in the crankcase.
• Be sure that each bearing is installed in its original
location.
• Install the bearings with their protrusions fitted
into the crankcase grooves.
6.
Install the crankcase in the cylinder block.
7.
Tighten the crankcase bolts in two steps to the specified
torque in the order shown in the diagram.
First Tightening Torque:
1
to
8
10 N · m (7 lb · ft) [1.0 kgf · m]
9
16
to
Crankcase Bolts (M6)
6 N · m (4 lb · ft) [0.6 kgf · m]
Second Tightening Torque:
1
to
8
Crankcase Bolts (M8)
23.5 N · m (18 lb · ft) [2.4 kgf · m]
9
to
16
11.5 N · m (8 lb · ft) [1.2 kgf · m]
5-72
Crankcase Bolts (M8)
Crankcase Bolts (M6)
4st 25/30 2022

Advertisement

Table of Contents
loading

This manual is also suitable for:

Mfs 35d3vs-64110-0

Table of Contents