Robin EHO9-2D User Manual

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Problem and possible cause Remedy
Exessive engine oil consumptionHigh fuel consumptionAbnormal engine noise
1. Oil leakage 1) Loose oil drain plug Tighten
2. Oil up 1) Faulty piston oil ring Replace
1. Fuel system 1) Clogged air cleaner Clean or replace
2. Engine core components 1) Low compression Check and repair
1. Ignition system problems 1) Loose ignition system wiring Inspect and tighten
2. Fuel system problems
1) Lean or rich fuel/air mixture
Clean, adjust or replace
carburetor
3. Cylinder head 1) Carbon deposit in combustion chamber Clean
4. Valve system problems 1) Improper valve clearance Adjust
Adjust
Replace
2) Faulty oil drain gasket Replace
3) Loose main bearing cover bolts Tighten
4) Faulty main bearing cover gasket Replace
5) Crankshaft oil seal (front, rear) defect
Repair or replace
2) Piston ring seizure, wear or poor contact Replace
3) Excessive wear of piston and/or cylinder Replace
4) Faulty stem seal Replace
5) Excessive oil level Adjust oil level
6) Breather defect
Repair or replace
2) Faulty needle valve and/or high fuel level in
float chamber
Repair or replace
3) Choke does not open fully
Check and adjust load
and/or engine speed
2) Overcooling
Clean or replace2) Improper or faulty spark plug
Tighten; replace gasket
2) Carburetor contamination Overhaul or clean
3) Dirty or clogged fuel lines Clean or replace
4) Air mixing from air intake system joints
Replace2) Leakage from cylinder head gasket
2) Valve heat deterioration Replace
3) Worn or broken valve spring Replace
4) Improper valve timing

Robin EHO9-2D Specifications

General

Brand	Robin
Model	EHO9-2D
Category	Engine
Language	English