WOT RPM range for 90 hp Force

[Todd Vary]

Hi Guys - No Operators manual -Plaese help<br />I found this spec @ a Prop Web site <br />Min WOT RPM 5000<br />Max WOT RPM 5500 <br /><br />just want to confirm this WOT RPM for -<br />1991 90 HP Force Dual exhaust Model<br /><br />Of course this 17' Spectrum does not have a RPM<br />Gauge - I guess I'll have to buy a handheld that attatches right on the spark plug / wire? Does it matter switch plug wire <br /><br />I'm getting 32 MPH with a 17" pitch aluminum Prop<br />@wot

 

[roscoe]

Re: WOT RPM range for 90 hp Force

Welcome to iboats.<br /><br />That is the correct rpm range.<br /><br />They did however drop it to 4750-5250 in later years.<br /><br />Speed seems about right.<br />I have a 1995 Spectrum 16'6" with a Force 70.<br />Get 32-33 at full throttle with an empty boat, at 5300 rpm<br /><br />tinytach.com is a decent little unit.<br />Or just get a real tach and install in dash, not hard to do if you are handy.