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Old 04-20-2016, 04:57 AM   #1
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Default 3200 SCR Speedometer?

Hi All,
About the middle of last summer my Speedometer quit working! I'm assuming it's either a clog in the pitot or the gauge itself went bad. ...I was changing my gear oil today and was looking for the Speedometer pitot and can't seem to locate it. ...Can anyone ley me know where to look or give me any other idea where to look for my problem?
Thanks in advance,
Mike

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Old 04-20-2016, 10:41 AM   #2
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bravo its on the out drive in front 1/4 way up drive hooked to a yellow insert . I had that problem went to a plug and play gps , all contained just had to run a power wire . Works great down to 1 mph .
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Old 04-20-2016, 11:36 AM   #3
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The pitot is built into the leading edge of the outdrive about inline with the water intake. The tube then connects to the top of the lower unit just below where the exhaust bellows attaches.
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Old 04-20-2016, 12:12 PM   #4
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Cool I'll check it out. .. thx guys!

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Old 04-20-2016, 01:05 PM   #5
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To build on this, both drives come hooked up with pitot tubes to the transom, but only the starboard side actually goes to the gage, correct? I took the hose off the port side because it was in such bad shape and plugged the transom hole with silicone.
The passages in both my drives were packed pretty solid with silt and such.
My boat also has a speed pickup wheel on the bottom of the hull, just forward of the port engine's fuel and water pumps. It's a big assembly and the wheel itself appears to be mounted on a removable plug so you can take it out from inside the boat to service it. Wheel is stuck and so is the plug. Was this a Maxum installed thing for something, or probably an aftermarket fish finder or...?
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Old 04-20-2016, 02:28 PM   #6
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I would ignore the speedo. They are notoriously inaccurate. Do you really want a hose with water going straight to the underside of your dash where your fuse blocks are located?

GPS is way more accurate.
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Old 04-20-2016, 04:06 PM   #7
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Quote:
Originally Posted by speedysprocket View Post
To build on this, both drives come hooked up with pitot tubes to the transom, but only the starboard side actually goes to the gage, correct? I took the hose off the port side because it was in such bad shape and plugged the transom hole with silicone.
The passages in both my drives were packed pretty solid with silt and such.
My boat also has a speed pickup wheel on the bottom of the hull, just forward of the port engine's fuel and water pumps. It's a big assembly and the wheel itself appears to be mounted on a removable plug so you can take it out from inside the boat to service it. Wheel is stuck and so is the plug. Was this a Maxum installed thing for something, or probably an aftermarket fish finder or...?
That paddle wheel is for an aftermarket GPS combo unit. I have one as well and it also has a built in water temp sensor.
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Old 04-20-2016, 04:08 PM   #8
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Quote:
Originally Posted by shrew View Post
I would ignore the speedo. They are notoriously inaccurate. Do you really want a hose with water going straight to the underside of your dash where your fuse blocks are located?

GPS is way more accurate.
Water should never get to the helm as the air in the tube will block it. Now if the tube were to break in the helm area then yes water may leak here.
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Old 04-20-2016, 05:41 PM   #9
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Quote:
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That paddle wheel is for an aftermarket GPS combo unit. I have one as well and it also has a built in water temp sensor.
Thanks!
Any tips for freeing it up...?
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Old 04-20-2016, 09:49 PM   #10
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Quote:
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Thanks!
Any tips for freeing it up...?
Does it look damaged? Remove any marine growth and hit with PB blaster
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