TOHATSU MFS 3.5B Owner's Manual page 36

36
INSPECTION AND MAINTENANCE
Replacing the propeller and shear
pin
A worn-out or bent propeller will lower
1 the motor's performance, and cause
engine trouble.
Before removing the propeller, remove
2
the spark plug caps from the spark
plugs to protect against personal
injury.
3
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4
Do not begin propeller removal and
installation procedure with spark
plug caps attached, shift in forward
5 or reverse, main switch at other than
"OFF", engine stop cord attached to
the switch, and starter key attached, or
engine could accidentally start leading
6
to serious personal injury. Disconnect
battery cable if possible.
7
Pull out the split pin from the
propeller boss and remove the
propeller from the shaft.
8
Remove the shear pin from the
shaft.
9
Install a new shear pin.
10
Shear pin
11
12
13
14
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Propeller
Do not hold propeller with hand(s)
when loosening or tightening propeller
nut. Put a piece of wood block between
propeller blade and anti-ventilation
plate to hold propeller.
Do not reuse split pin.
After installing split pin, spread the
pin apart to prevent it from falling
out which could lead to the propeller
coming off during operation.
Replacing the spark plug
Do not reuse spark plug with
damaged insulation, or sparks
can leak through crack, potentially
leading to electric shock, explosion
and/or fire.
Do not touch spark plugs
immediately after stopping engine
as they will be hot and could cause
severe burns if touched. Allow
motor to cool down first.
If the spark plug is fouled, has carbon
build up, or is worn, it should be
replaced.
When reusing spark plugs, remove
dirt from the electrodes and adjust
spark gap to specification.
Split pin
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