Maeda MK0003, Service Manual, Page: 64 / 348

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4.3 COMPONENTS OF ENGINE
Note: For details of engine maintenance, refer to the separate engine service manual (TNV service manual).
4.4 FUEL
4.4.1 APPROPRIATE USE
The use of fuel oil with poor properties causes the following defects. Provide guidance to users for using appropriate
fuel oil.
1. Adhesion of deposit to exhaust valve
In addition to poor compression, imperfect combustion, excessive fuel consumption, etc., unburned oil mixed in
the exhaust gushes out or the exhaust valve seat portion is eroded.
2. Adhesion of deposit to piston ring groove
Blow-back of burned gas, poor lubrication, imperfect combustion, excessive fuel consumption, or contamination
of lubricating oil occurs and cylinder liners and piston rings are worn out prematurely.
3. Blockage or corrosion of nozzle hole of fuel injection valve
Imperfect combustion causes wear, corrosion of the fuel injection mechanism and closing of the nozzle hole.
1 - Sling fittings (flywheel side)
2 - Coolant pump
3 - Sling fittings (cooling fan side)
4 - Cooling fan
5 - V-belt
6 - Crankshaft V-pulley
7 - Oil filler port on side (engine oil)
8 - Drain plug (engine oil)*
9 - Fuel inlet
10 - Carburetor type fuel feed pump (if
equipped)
11 - Fuel priming lever
12 - Oil level gauge (engine oil)
13 - Lubricating oil filter
14 - Governor lever
15 - Fuel injection pump
16 - Intake manifold
17 - Intake port (from air cleaner)
18 - Fuel filter
19 - Return oil pipe (to fuel tank)
20 - Upper oil filler port (engine oil)
21 - Bonnet
22 - Flywheel
23 - Starter
24 - Exhaust manifold
25 - Alternator
SAM05730