![TOHATSU MFS 4B Owner'S Manual Download Page 37](http://html1.mh-extra.com/html/tohatsu/mfs-4b/mfs-4b_owners-manual_1124697037.webp)
It is important to inspect and maintain your outboard motor regularly. At each
interval on the chart below, be sure to perform the indicated servicing. Maintenance
intervals should be determined according to the number of hours or number of
months, whichever comes first.
37
1
2
3
4
5
6
7
8
9
10
11
12
13
INSPECTION AND MAINTENANCE
2. Periodic inspection
Description
Inspection intervals
Inspection procedure
Remarks
First 20
hours or
1 month
Every 50
hours or
3 months
Every 100
hours or
6 months
Fuel
System
*
Carburetor
○
Strip, Clean, and adjust.
Fuel filter
○
○
○
Check and clean or Replace.
Piping
○
○
○
Check and Replace.
Fuel tank
○
○
Clean
Ignition
Spark plug
○
○
Check gaps.
Remove carbon deposits or Replace.
0.8-0.9mm
(0.031-0.035in)
*Ignition timing
○
○
Check timing.
Starting
System
Starter rope
○
○
○
Check for wear or chafing
*Starter motor
○
Check for salt deposits and
the battery cable condition.
Battery
○
○
○
Check installation, fluid quantity,
gravity.
Engine
Engine oil
○
○
Replace
Valve Clearance
○
○
Check & adjust
*Timing belt
○
Check and Replace if necessary.
*Thermostat
○
Check and Replace if necessary.
Lower
Unit
Propeller
○
○
○
Check for bent blades, damage, wear.
Gear oil
Replace
○
○
Replace
○
Change or replenish-oil and check for
water leaks.
195mL
*Water pump
○
○
Check for wear or damage.
Replace impeller
every 12 months.
Bolts and Nuts
○
○
○
Retighten
Sliding and Rotating Parts.
Grease Nipples
○
○
○
Apply and pump in grease.
Outer Equipment
○
○
○
Check for corrosion.
Anode
○
○
Check for corrosion and defomation.
Replace
*
Have this handled by your dealer.