Shindaiwa GP344 Owner's Manual

6

Before the pump can develop suction 

or “lift” at the water source, the pump 

impeller must first be primed by filling 

the pump housing with water. Once the 

water pump has been primed, addi-

tional priming should be required only 

if the pump has been drained or other-

wise emptied.

Remove the filler plug at the top of 

1. 

the pump housing. Use care not to 

lose the sealing ring beneath the 

filler plug.

CAUTION!
Never allow the pump to run dry! 

Operation without water can perma-

nently damage the pump seals.

Fill the pump housing through the 

2. 

priming port with clean water until 

water overflows from the filler plug 

hole on the pump body.
Replace and securely tighten the 

3. 

filler plug. 

A damaged or missing filler plug 

seal may allow air to leak into the 

pump housing. Air leakage can lower 

performance!

requirements are NOT approved for use in Shindaiwa gasoline engines.  Use of alternative fuels may cause 

performance problems, loss of power, overheating, fuel vapor lock, and unintended machine operation, including, 

but not limited to, improper clutch engagement.  Alternative fuels may also cause premature deterioration of fuel 

lines, gaskets, carburetors and other engine components.

 

 

Gasoline - Use 89 Octane [R+M/2] (mid grade or higher) gasoline known to be good quality. Gasoline may contain 

up to 10% Ethanol (grain alcohol) or 15% MTBE (methyl tertiary-butyl ether). Gasoline containing methanol (wood 

alcohol) is 

NOT approved.

 Mixture Oil - Engine oil meeting ISO-L-EGD (ISO/CD 13738) and J.A.S.O. 

M345/FD

 standards must be 

used.  Shindaiwa highly recommends using Shindaiwa Red Armor

 engine oil in all Shindaiwa Hybrid 4

 engines to 

protect the engine from harmful carbon build up, maintain engine performance, and increase engine life. Shindaiwa 

Red Armor

 engine oil exceeds ISO-L-EGD and J.A.S.O. 

M345/FD

 performance requirements.  Engine problems 

due to inadequate lubrication caused by failure to use an ISO-L-EGD (ISO/CD 13738) and J.A.S.O. 

M345/FD

 certified 

oil will void the engine warranty.

Shindaiwa Red Armor

 engine oil may be mixed at 50:1 ratio for application 

in all Shindaiwa engines sold in the past, regardless of ratio specified in those 

manuals.

Stored fuel ages. Do not mix more fuel than you expect to use in thirty (30)     

days, ninety (90) days when a fuel stabilizer is added. Use of unmixed, improp-

erly mixed, or stale fuel, may cause hard starting, poor performance, or severe 

engine damage and void the product warranty. Read and follow instructions in 

the Long Term Storage section of this manual.