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    Anyone ever time a 1988 merc 115 6 cylinder? Need cranking timing BTDC or ATDC

    I have the Seloc 1965-89 repair manual and on page 6-23 paragraph 5, 6, It says crank and adjust primary pic-up...until "timing mark" on fly aligns with pointer (already adjusted to .464 with dial ind. and plugs are out and no idle stabilizer). The appendix says 5* BEFORE TDC. Not sure of that...
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    1985 inline 6 can't find timing marks with timing light. WHAT?

    Hey all, Motor has a miss at idle but when I move the advance by hand it smooths out so I want to check the timing but I don't understand what is going on here. I disconnected throttle cable, aliened arrow on linkage, pulled all plugs, put indicator in #1 and checked .464 is on the money. (all...
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    Any Volvo Penta AQ151C / 290 owners out there?

    I would like to try the original prop that came on this boat. It is a 1988 Imperial 200 (20') with the AQ 151C volvo penta motor and 290 out drive. (Michigan 14 x 17 prop on it now). Any ideas on what prop came on this?
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    Volvo Penta 290 Out-drive RH or LH

    I am asking this question in this forum because you all know Volvo penta motors and out-drives. I just purchased a 1988 Imperial 200 with an AQ 151C motor and a 290 out-drive. The prop on it is a Michigan 14 x 17 RH and it is beyond repair. What was the standard prop for this unit, RH or LH ...
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    Long hub, short hub? Volvo Penta prop.

    Picked up a 1988 Imperial 200, Volvo Penta AQ 151, 290 out drive. No prop on it but two props in the boat. One is a Michigan 14 x 17 short hub,(black) the other is a 14 x 19,6R. long hub, (white). What was the original prop size for this boat?
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    Volvo Penta AQ151A, 151B, 151C, What is the difference? (need water pump for 151C)

    I am looking for the proper circulating water pump for my AQ151C. It is a 1988. The casting # is 1326343. On ebay, the same pump has # 1378809, 271975. It looks like there are three types of impellers used in them. What do I need to look for to get the proper pump? Are auto pumps the same?
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    What year is this motor?

    I was given a free 100 hp Mariner outboard. I want to get a repair manual but need to know what year it is. There are no numbers on the mounting bracket or tag. The only number is on the back corner of the block on a disk (like a soft plug) with this number, C204507. Any help?
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    What do all the numbers in the hull id tell me?

    My old sea ray hull id is SER7M0890778-18510261-8. I think the SER is for sea ray and the rest must be a serial number and year? What about all the numbers after the dash? Also this boat has a red and white inside with a what looks like a Red wings logo stitched into the motor cover. any thoughts?
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    Where to find a wiring diagram for older mercruiser 165 hp

    I picked up a project boat to repair and resell. The wires are all undone around the 165 hp inline 6 cyl motor. I have a "SELOC MERCRUISER STERN DRIVE TYPE 1, ...... 1964-91" The wiring diagram for the 165 is for serial number 3774865 and higher. My serial number is 3438515. Is this serial...
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    1971 20 hp Johnson Seahorse has no spark in either cylinder. Why?

    This 20R71S motor has no spark at either plug. Before I pull the flywheel, What could cause this problem on both cylinders? There are 2 wires out of the magneto that are not connected to any thing. There is a switch that the shift linkage pushes on when shifting into gear that has an empty male...
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    Just picked up two old mercs and need help with identifying them.

    One has 1100 on front cover and 110 hp on lower cover with a serial number of 2209364. It could be a 1967 ? It has a rod through the crank cover on number 5 cyl. but a great lower unit. The other motor is what is puzzling me. The decals have been modified and now says 1200 on the motor cover and...
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    Need a drive shaft, What motors and years use the same shaft as this.....

    1986 Johnson 140 hp mod # J140TLCDC. The # on the broken shaft is 391381. When I look for a shaft, Is there more than just that year and hp to find one?
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    115 HP No compression #3 cyl. Big fix? And what year is this Merc?

    Re: 115 HP No compression #3 cyl. Big fix? And what year is this Merc? Here is a pic of the starter side. What are you looking for to tell you the year?
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    115 HP No compression #3 cyl. Big fix? And what year is this Merc?

    Helping a friend with his old motor that lost power. I'm retired and have time to tinker with it. He said it has a scored bore in no. 3 cyl. (looked through an inspection plate?) I want to get a repair manual but not sure of the year of this motor. It is a Mercury 115 HP, 1150 Thunderbolt...
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    How can I slow boat down for trolling?

    I have a 24' SeaRay with a chevy 350 and the idle won't go lower than 650 rpms. The boat trolles at 3.2 mph. I want to be able to slow down to as slow as 1.8 but can live with 2.2. I know some fellas use drift socks on each side but that seems like to much work to pull out every time you want to...
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    Toung weight

    Re: Toung weight I am not sure what hitch this is. The tag has been painted over. I think it is a class III. Can you tell by the pic?
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    Toung weight

    Re: Toung weight More pics.
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    Toung weight

    Re: Toung weight My boat is a 1977 24' SeaRay weekender. The trailer has rollers up the center and pivoting bunks on each side. I moved the boat up a bit on the trailer and took it down to the scales and it weighs 6200# boat and trailer together with empty gas tank. (unhooked from the truck). I...
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    Winch Q

    I have a 24' SeaRay on a tandom trailer with only a hand winch. I had the winch tower off for painting. I want to adjust the winch into the proper position. Should the cable be pulling straight or slightly lifting up on the front of the boat? Also should the eye on the boat come to rest or touch...
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    Toung weight

    My truck bounces up n down a bit more than I think it should hauling my 24' sea ray on a tandom axel trailer. The boat and trailer weigh 6400 lbs. The truck is a 95 Chevy extended cab short box silverado Z71 off road 4x4 1500 that should haul it ok but it is about max for this truck. I only have...
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