Hi there, welcome to iboats, One of the best ways to find the correct parts for your engine is by using the engine serial number.. If you have the serial number handy, it will help take out the guesswork.
To the starter or from the starter on up to the engine when tested with either a multi meter or test light?
Some models has either a 50 or 90 amp fuse connected to the main starter post which protects the engine components.
Do you see a block type fuse device connected to the battery cable...
https://www.crowleymarine.com/sb/2/13057
Situation A blocking diode is used in the electrical system of MerCruiser V6 and V8 engines with TKS (Turn Key Start) carburetors. When the engine is warm but is not running, a temperature switch allows positive current to flow to the TKS heater module...
What year is the engine? Is there a serial number? Photos may help here too.
https://www.scribd.com/document/385929465/2008-Mercruiser-service-manual-index-pdf#
This one just has more of the 454 Magnum appearance to me vs being the 7.4 Bravo design found in and around 1996... plus searching the number seen on the oil filter adaptor sort of helps support that visual by riser design.
As mentioned, try to get the engine serial number as it should help...
Gasket Item numbers 43 and 44, https://www.mercruiserparts.com/bam/subassembly/30957/983/30
Missing gasket number 40 in the photo?
https://www.mercruiserparts.com/bam/subassembly/30957/983/50
https://www.mercruiserparts.com/bam/subassembly/30957/983/60
This parts breakdown of the starter should get you by with other parts if needed, https://www.mercruiserparts.com/bam/subassembly/32845/6993/60
68575T 2
PINION (1 required per assembly)
68575T 2 - PINION NLA [ More info ]
Unavailable
DV365 - Starter Drive [ More info ]...
What is your engine serial number?
Do you have the part number?
There are 2 other aftermarket part brands available that are a lower cost for a new starter if interested in knowing.
Pretty much everything gimbal ring can be found within the following link by JR marine. See the second video for proper installation instructions.
https://www.jrmarine.com/products/hp_parts.htm
0A665138 suggests the stern drive to be an 1986 MERCRUISER MC1, (1.50:1) Model Number 01509016.
Lets see some pictures of the drives and bell housing/transom of the boat as it may help some... Engine too.
There appears to be possibly 4 dealers in the U.S.A that may have some left over, https://www.crowleymarine.com/mercury/products/8613041-fuel-line
https://www.crowleymarine.com/mercruiser/oem-parts/stern-drive/1998/4111025n2?mdl=FPH7XJ&q=0M018823
Bet you could call Chaparral customer service and ask general questions of how it’s held in place and try asking for general photos of the area opened up via email or something… Some manufacturers are decent at wanting to help.
Is there any type of access to the rear side of the dash from sitting in the bow of the boat looking aft? AKA A seat back rest that lifts up...Then remove a bunk board of some type...Maybe?
What does the oil gauge read with the key on, engine off? < Any alarm too?
Just making sure there isn't a certain type of ground issue though it could be a ground issue too.
Was the oil and filter changed since last years run to this years run?
Engine serial number is?
