Will Polaris Ranger start with a bad regulator?

Question edited for clarity.
Question moved from Cars and Trucks to make model category.

The Solenoid Relay?

This? Test it.

https://www.google.com/search?q=2013+Polaris+Ranger+800+starter+relay

Wiring, these is also a 'Start Diode', not sure what that is about, a diode only lets voltage travel in one direction.

https://www.google.com/search?q=2013+Polaris+Ranger+800+starter+solenoid+wiring

The Polaris forums are a good source of information.

Service Manual

https://www.manualslib.com/manual/1068813/Polaris-Ranger-Rzr-800.html?page=368#manual

..

Here is your Service Manual and Owner's Manual.

Polaris RANGER XP 700 4X4 Service Manual - ManualsLib

https://www.manualslib.com > ... > 4X4 700 EFI
View and Download Polaris RANGER XP 700 4X4 service manual online. RANGER XP 700 4X4 automobile pdf manual download. Also for: 2008 ranger 700 xp, ...

Service Manual for 2005-2006 RANGER 700 4X4/6X6

https://ranger.polaris.com > ... > Service Manuals
Service Manual is printed on demand and ships separate from other products. We do not accept returns on this product.. Canada.

• 
  

  Owner's Manuals ' Polaris RANGER EN-CA

  https://ranger.polaris.com > en-ca > owners-manuals
  Find and download the owner's manual for your Polaris RANGER by selecting its year and model. Canada.
  
  ..

Question edited for clarity.

SHI0206 - Kawasaki & Polaris Diesel UTV Starter

MFG Supply https://www.mfgsupply.com > shi0206
OEM Replacement This part is aftermarket equipment designed to replace the original manufacturer's part numbers specified here. ... 2014 Polaris Ranger Diesel.
US$162.33

Ranger ETX Starter Replacement *UPDATE

Polaris Ranger Forum https://www.rangerforums.net > ... > General Discussion
Sep 20, 2018 - Replacement: Carefully line up and press into place the new starter. Take top bolt and begin threading into hole but do not tighten. This will ...

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More results from www.rangerforums.net ..

what is it doing? you said starting. like is it not cranking over? because you mentioned the charging system.
or is it not firing up when it cranks over? because you also mentioned starting system.

wired wrong to injectors ? timed wrong maybe

the solenoid could be bad, try jumping acrossed it

Look at the contacts in the solenoid on the starter motor. If the contacts are pitted too bad then replace it, otherwise a little lubrication on the pivot points may solve the problem.

168 is a High Voltage. If it continues you may be having a voltage regulator about to or already gone bad.

if its a black smoke its running rich. check your air filter and air tube for clogs. something may have made a nest in there.

Sounds like the carb,has it been check after its test and tune ?