Rotax 914 series Maintenance Manual

BRP-Rotax
Maintenance Manual
72-00-00
page 66
May 01/2007
Effectivity 912/914 Series
Edition 1 / Rev. 0
d02622
Check the valve face for wear caused by pounding VT03.
Pounding may occur on the inside and the outside edge of the seat
surface and must be measured as shown in Fig. 72-68.
See 72-00-00 sec. 4.
■ CAUTION: The valve seat at the valve disk is surface hardened.
For this reason, the valve disk must not be reworked.
If necessary, the valve must be replaced.
However, lapping with valve lapping paste is possible.
Seal-lap both valves and check for leakage.
■ CAUTION: The end of the valve stem (5) must not be ground.
See Fig. 72-68.
07483
VT03
VT03
Fig. 72-70

Rotax 914 series Specifications

General

Bore	79.5 mm
Stroke	61 mm
Compression Ratio	9.0:1
Cooling System	Liquid-cooled cylinder heads, air-cooled cylinders
Redline	5800 rpm
Engine Type	4-cylinder, 4-stroke
Fuel Type	Avgas 100LL
Oil System	Dry sump
Fuel System	fuel injection
TBO (Time Between Overhauls)	2000 hours
Displacement	1.211 liters (1211 cc)
Power Output	84.6 kW (115 hp) at 5, 800 rpm