Rotax 582 UL series Operator's Manual page 46

4.5) Trouble shooting
Fuel
Spark
Page 4-4
January 01/2018
Non-compliance can result in serious injuries or death!
Only qualified staff (experienced two stroke mechanics) trained on
this particular engine, are allowed to carry out maintenance and re-
If the following hints regarding remedy do not solve the prob-
lem, contact an authorized workshop. The engine must not be
operated until the problem is rectified.
Your ROTAX engine requires basicly two essentials to run.
Spark and correct fuel/ air mixture. The majority of problems
quite often are a simple lack of one or the other.
Follow an organized method of troubleshooting. This will facili-
tate the identification of discrepancies or shortcomings.
Start by checking the supply (tank), fittings (loose?), filter
(plugged?), float chamber (fouled?).
Try new spark plugs.
Problems of a more complex nature are best left to a ROTAX®
engine technician: See your ROTAX® Authorized Distributor or
their independent Service Centers.
Knocking under load
Possible cause
Octane rating of fuel too
low.
Fuel starvation, lean
mixture.
BRP-Rotax
m WARNING
pair work.
ATTENTION
Remedy
Use fuel with higher octane rating.
Check fuel supply.
Effectivity: 582 UL
Edition 3 / Rev. 0