Electrex World - Electrical parts for motorcycles - logo
     View Basket     Items = 0   Total = £0.00  (Inc. VAT & p&p for UK)

Fitting Instructions - STK-010 BSA B50, B44, B40/25, C15


For printing: View fitting instructions as a PDF file (this will open in a separate window)
(you will need adobe acrobat to use this option)

Kit Contents


Stator
Rotor
Spacers
Combined HT-CDI unit

Fitting Instructions

  1. Remove the original stator & rotor from left hand cover.


  2. Fit the new rotor and small spacer (if retaining nut is not stepped) + nut, don’t fully tighten yet (see fig 2).


  3. Place the 3 spacers provided on the studs, leaving in position the original spacers and chain tensioner (see fig 2).


  4. Fit the new stator as shown (see fig 3) with stainless steel retaining plate outermost.


  5. Feed cables through crank case, (fig 4.). Locate HTCDI and connect the terminals from the stator


  6. See fig 5. Position shown is for the start of sparking, total advance for this system is 270, so if maximum advance for the engine is 34degrees, B50/B44, set the piston to 70 BTDC.

    0.34mm BTDC for the 90mm Stroke B50/B44
    0.26mm BTDC for B40, B25, C15 etc which have a 70mm Stroke.


  7. After the piston is positioned, correctly align rotor and stator as shown in figure 5.


  8. Carefully tighten the rotor retaining nuts

The above engine timing settings are intended as a guide only, engines with different states of tune or running on methanol may require a different set-up.

Click on any of the images below to see a larger version
STK-010 fig-2    STK-010 fig-3    STK-010 fig-4    STK-010 fig-5    wiring diagram


For printing: View fitting instructions as a PDF file (this will open in a separate window)
(you will need adobe acrobat to use this option)