Guide: Timing ignition (Malossi MHR)

HasSse666 · Dec 28, 2012

Install new ignition and adjust the ignition

Malossi innerrotor ignition

Preparations
- Wash the scooter, especially the engine
- Disconnect and remove the battery.

Disassembly - Minarelli engines
1. Remove the coolant pump
2. Loosen the three nuts that drive the cooling pump and remove them from the flywheel.
3. Unscrew the nut that locks the flywheel on the crankshaft, remove the flywheel using the flywheel puller.
4. Remove the coils, the pickup and cables

Assembly

Pic 01
Old ignition have I removed earlier

Pic 02
Old gasket fitted

Pic 03
Then Malossis bottom plate
It is not possible to mount it wrong

Pic 04
The key, I already mounted on the crankshaft

Pic 05
Then the rotor is mounted

Pic 06
I locked the transmission on the other side

Pic 07
Now I just pull the bolt a bit but later it shall have it tightened to 30Nm

Pic 08
Then stator and wiring harness

Pic 09
Tighten the three bolts slightly

Pic 10
Mount the dial indicator in the spark plug hole
I will now find out top dead center (T.D.C.)

Pic 11
I turn the crank counterclockwise until the pointer on the clock changing direction

Pic 12
Now I've reached the top dead!
Then I reset the clock

Pic 13
I keep turning the crank counterclockwise (each turn of the clock is 1mm pre-ignition)
The manufacturer recommends 2.3 mm pre-ignition (see Table 1 below)

Table 1
Recommended pre-ignition
(2.3 mm or 32-33 degrees)

Pic 14
There I have 2.3 mm!

Pic 15
Aligne rotor and stator referencemarkings

Pic 16
Tighten the bolts

Pic 17
The reference marks on the stator and rotor lined

Pic 18
Now, tighten the bolt to 30Nm

(I have locked variator on the other side again)

Pic 19
The plate for the water pump drive fitted

Pic 20
Transfer the three bolts for the water pump drive from the old flywheel to the new plate

Pic 21
One of three bolts in place
Then install the waterpump in the usual way