Priming The Fuel System; Engine Oil; Engine Oil Specifications - Yanmar 4JH45 Operation Manual

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Priming the Fuel System

Bleeding the fuel filter
An automatic bleeding device is installed
on the fuel filter. Therefore an air bleed
screw is not required.
1. Push up and down on the priming
pump to bleed the fuel filter. (approx.
60 times)
2. When you begin to feel resistance,
bleeding is complete.
Never use the starter motor to crank the
engine in order to prime the fuel system.
This may cause the starter motor to
overheat and damage the coils, pinion
and/or ring gear.
JH Series Operation Manual
BEFORE YOU OPERATE

ENGINE OIL

Engine Oil Specifications

Using engine oil that does not meet or
exceed the following guidelines or
specifications may cause seizure of parts,
abnormal wear and shorten engine life.
Service Categories
Use an engine oil that meets or exceeds
the following guidelines and classifications:
• API Service Categories CD, CF, CF-4
CI and CI-4.
• SAE Viscosity: 10W-30, 15W-40. Engine
oil 10W-30 and 15W-40 can be used
throughout the year.
• Be sure the engine oil, engine oil storage
containers and engine oil filling
equipment are free of sediment or water.
• Change the engine oil after the first 50
hours of operation and then at every 250
hours thereafter.
• Select the oil viscosity based on the
ambient temperature where the engine
is being operated. See the SAE Service
Grade Viscosity Chart (Figure 5).
• Yanmar does not recommend the use of
engine oil "additives".
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