Question about hour meter install

[marshall1322]

I have a 06 sportster(155hp 4 tec) and installed a Briggs&Stratton digital
display Maintenance minder per instuctions....one wire wraps 4 times around plug wire and the other to ground.I ran the boat about 1hr but the meter shows 0.3hrs ?Is this because it is a 3 cyl engine and I need to multiply reading by 3? Is this meter for single cyl. only? below is the info on product....Thank if you can help.

Engine Applications
The MAINTENANCE MINDER can be used on any lawn mower type engines. The only limitation is the spark firing frequency must be greater than or equal to 10Hz. As most engines are operating at 20 or 40 spark firings per second, compatibility is not a problem. Easy Hookup

 

[HogansJet]

I'm not sure about why your meter appears to be reading low...maybe you could try changing the pick-up wire to a different plug wire and see what happens.
I found this review on ebay

http://reviews.ebay.com/Briggs-and-Stratton-Maintenance-Minder-
P-N-5081_W0QQugidZ10000000003185244

This is a battery powered hourmeter and the battery is apparently non-replaceable. I'm wondering how long it would last...although I guess you could remove it from the boat and bring it inside for the winter to extend the battery life. Let us know how you make out.

Mike