Merc inline trigger testing

[verno]

I have a merc 1150 1973 vintage. I am trying to find test procedure for the ignition trigger. This has the breakerless distributor with the band that holds the cap in place. It appears from my genuine Mercury repair manual that the trigger is not replaceeable. and the mercury manual does not list trigger test specs for this distributor just " try a known good trigger". Is that the best info out there? also can anyone provide a link or address for Bigweek Mercury inlines newsgroup? Thanks!

 

[emckelvy]

Re: Merc inline trigger testing

Once More Time, courtesy of Clams C.:<br /><br />MERCURY BATTERY-POWERED CDI TEST <br />FOR DISTRIBUTOR MODELS<br /><br />This test is for the 332-2986 switchbox used from 1967-1978 on all the inlines.<br /><br />This test assumes your coil is good (most all are).<br /><br />DISCONNCT BATTERY <br /><br />1. Turn off ignion<br />2. Disconnect all 3 wires on the distributor side of the switchbox.<br />3. Remove the HV lead from the coil to the center cap (remember it unscrews<br />from cap)<br />4. Reconnect that HV center lead to the COIL side only.<br />5. Position that HV lead about about 3/8" from ground (block, shrouds etc)<br />and find a way to hold it there.<br />6. Jumber the brown and white terminals on the dist. side of the switchbox<br />together.<br /><br />RECONNECT BATTERRY<br /><br />7. Check that you have +12 V at red terminal.<br />8. Turn on ignition and verify +12V at white terminal (on red terminal side)<br />9. Touch the black terminal to ground - unit should cause spark each time<br />you touch ground.<br /><br />If that passes and it won't fire at all, suspect the trigger.