Check warm air duct from heater to body for tightness
| Possible defect | Remedy |
|---|---|
| Clamps loose or hoses dropped down or damaged | Secure loose parts, replace damaged parts with new ones |
Loosen hose clamp, disconnect hose to heater briefly (2 secs) at fuel pump, then check whether fuel is delivered by pump. Catch escaping fuel in a cloth.
| Possible defect | Remedy |
|---|---|
| Check fuel supply | Fill fuel tank |
| Fuel filter blocked | Install new fuel filter |
| Strainer dirty | Clean strainer |
| Fuel check valve blocked | Replace fuel check valve and readjust delivery capacity |
Switch heater off. Remove glow-spark plug and check
| Possible defect | Remedy |
|---|---|
| Thermo switch defective (no current, glow time too short) | Install new thermo switch |
| Glow element open | Install new glow-spark plug |
| Glow-spark plug dirty | Clean glow-spark plug |
| Ignition contact breaker defective or maladjusted | Adjust contact breaker or replace if necessary |
| Ignition cable or coil defective | Test ignition system and install new parts if necessary |